吕道飞, 林洁玲, 许锋, 袁文兵, 张妍, 陈忻. 锌基金属有机框架材料对三甲胺的吸附性能研究[J]. 南方水产科学, 2022, 18(6): 110-117. DOI: 10.12131/20220160
引用本文: 吕道飞, 林洁玲, 许锋, 袁文兵, 张妍, 陈忻. 锌基金属有机框架材料对三甲胺的吸附性能研究[J]. 南方水产科学, 2022, 18(6): 110-117. DOI: 10.12131/20220160
LYU Daofei, LIN Jieling, XU Feng, YUAN Wenbing, ZHANG Yan, CHEN Xin. Study on adsorption performance of zinc-based metal-organic framework for trimethylamine[J]. South China Fisheries Science, 2022, 18(6): 110-117. DOI: 10.12131/20220160
Citation: LYU Daofei, LIN Jieling, XU Feng, YUAN Wenbing, ZHANG Yan, CHEN Xin. Study on adsorption performance of zinc-based metal-organic framework for trimethylamine[J]. South China Fisheries Science, 2022, 18(6): 110-117. DOI: 10.12131/20220160

锌基金属有机框架材料对三甲胺的吸附性能研究

Study on adsorption performance of zinc-based metal-organic framework for trimethylamine

  • 摘要: 海产品富含蛋白质等多种活性物质,广泛应用于食品和化妆品行业。如何高选择性地脱除海产品中三甲胺 (Trimethylamine, TMA) 等腥味物质,是目前海产品加工过程中面临的难题。通过X射线粉末衍射、扫描电子显微镜等对沸石咪唑骨架材料-8 (ZIF-8)、美孚石油公司5号沸石 (ZSM-5) 分子筛和活性氧化铝材料进行表征,研究了这3种材料对典型腥味物质三甲胺的吸附性能。吸附动力学测试表明,在200 mg·L−1的三甲胺溶液中,3种吸附剂在600 min左右达到吸附饱和。测试3种吸附剂在25 ℃下的吸附等温线,发现其对三甲胺的吸附容量为:ZIF-8 (517.1 mg·g−1) >活性氧化铝 (401.8 mg·g −1) > ZSM-5 (390.3 mg·g −1)。同等条件下,ZIF-8对三甲胺的吸附量是活性炭的3.2倍,其吸附性能超过同期的大多数材料。傅里叶变换红外光谱和Zeta电位测试表明,ZIF-8和三甲胺间的吸附作用为C-H···π作用、C-H···N作用及静电作用。

     

    Abstract: Rich in proteins and other active substances, seafoods have been widely used in the food and cosmetic industries. How to remove fishy substances such as trimethylamine from seafoods with high selectivity is a challenge for the current seafood processing. In this paper, zeolite imidazole framework-8 (ZIF-8), zeolites socony mobil-5 (ZSM-5) and activated alumina were characterized by powder X-ray diffraction and scanning electron microscopy, and their adsorption performance for the typical fishy substance (Trimethylamine) was also investigated. Adsorption kinetics tests show that the adsorption saturation of the three adsorbents reached at about 600 min in a 200 mg·L−1 trimethylamine solution. The adsorption isotherms of the three adsorbents at 25 ℃ were tested and their adsorption capacities for trimethylamine followed a descending order of ZIF-8 (517.1 mg·g−1) > activated alumina (401.8 mg·g −1) > ZSM-5 (390.3 mg·g −1). Under the same conditions, the adsorption uptake of trimethylamine on ZIF-8 was 3.2 times higher than that on activated carbon, exceeding those of most materials in the same period. Fourier transform infrared spectroscopy tests and Zeta potential tests show that the adsorption interactions between ZIF-8 and trimethylamine were dominated by C-H···π interaction, C-H···N interaction and electrostati force.

     

/

返回文章
返回